Input integrated type display device

PURPOSE: To provide the input integrated type display device which can solve the problems such as high power consumption, heavy weight, a tendency to be affected by magnetic field, low resolution and durability, a tendency to be weak to static electricity, low environmental resistance brought about by a complicated structure of a detection circuit, and a difference between the viewpoint of the input position and that of the display position due to the parallex. CONSTITUTION: A display panel using a liquid crystal 32 as a display medium integrally forms an optical waveguide 36 guiding the light of the prescribed wavelength almost in parallel with the surface of display substrates 30 and 31 in a matrix shape. An optical guide path 30 is formed between display picture elements, and a piece of the display substrates consists of a silicon single crystal substrate. COPYRIGHT: (C)1993,JPO&Japio